Pole-making machine



Maul za ,1926.

D. B. HANNA POLE MAKING mnnm sind July 17. 1925 Sheets-Sheet 1 Magd. z3 ,1926.

D., a. HANNA POLE IAKING MACHINE v FiludKJuly 1'7 1925 y.

2 Sheets-Sheet 2 Patented Mar. Z3, 192@o asian? ieParEfNT ...o-ninos.

ravin e. Hanna., or ciiioAeaiLti-Nois.

IPOLErlVIAKING MAGI-IINE.

Z'oallfwlzom tmdg/ conce/*n Y Be -it l known that I, DAVID Bn-HANNAV a citizen of `the `United iStatesVifesiding at Chicago, in the-countyol CookA and State of Illinois, Ahave inventedl certain newand useful improvements in Pole-Making Mrt-- chinas-ot Whichthe following is a specification.

jThis invention urelates to pole-making ma- 30 lchines lior -making lconcrete 4poles and 'the like, f and has for its primary object. the provision otsiinple, durable,and effective supp orting andfdriving 4means ior the mold yofV such character that the `parts thereof may be `quickly operatively associated with the mold,` thus effecting considerable vsaving of time and labor in operationoffthemachine, particularly iwhenfchangiiig molds or removing molds. V Y V Another object Yoie, my Ainvention Yresides inthe lprovisioirof a `sectional tire adapted to be lfquicltly connected tothe mold and takingthe Wear incidentto operationof the machine. y

Stillanotherobject et' my invention is ,the provisionina machine ofthe character fdescribedot' ineansswhereby it maybe easily adjustedto-tale care otmolds of diilferent 'fA-urtherobjectfot my invention is the provision of; a centritugalpole machine, the support of which is so constructed that one portion may be--moved for-exposure orre- *nioval of the mold While the remaining portion serves as a cradle-tor the-mold.

- @ther objects reside in the novel arrange-4 ment and construction` of parts hereinafter imore ullypointcd out. l

'Hoivthe `foregoing,.together With such l0 other objects and .advantages as may hereinafter` appear, or are incident to -my p invention, are realized, isfillustrated in preferred #form inthe accompanying drawings, 1aghere- Fig. l is a kc liagrainmatio longitudinal assembly view oi' the machine;

Fig. 2. is a partial end view and a partial cross section OtheWmaChine;

Fig. 3 vis a section taken substantially on the line 33 ot Fig-,12;

Fig. l is airaginentarv end ,view ot a portion ofl the smold, tire and supporting .meansg Fig.

is -ai-tragmentary section taken on *t5 sienne-5a 0irig-ammi Application'sied July 17, V1925. Vseriaifiio, 44,151.

.Fig. 6 isa detail,y View of i a lporti-on .of the `mold showing a modification therein.

Referring `now `toifFig.A l, it will be seen that the machine comprises in general a base A, aimoldfB lin .thisinstance constructed of a plurality of Li'langed p'ipe'flike sections vboltedI-.or otherwise `secured together, a plurality of Icombined driving, `supporting and. guiding units 0 and` ai drive shattfD, lhaving suitable bearings, said shaft being drivingly `connectedwvith `the-mold. as Will hereinafter appear.

:Referring now more especially `to Figs 2 Vto 5 inclusive, the units C are-shown con structed as .follows :V Each unit-.comprises a `loiver support 7, carryingin ithis instance a pair of spaced adjustabletlanged-support- `ingrolls 8,"orvlsupporting the mold D, thru the medium ot the sectional tires 9 fto be presently more fully described 3. and' an upper support lOahinged or pivoted at llto the `lower support"7,l and carrying a pair of -sp'acedguiding yrolls 12. The' sectionaltire p9 is :formed Vot a pairA otsemi-'circular members `adaptedvto be `held, in `tire form around the mold bythe support, that is to say, one section. ot the-tire issupportedoii i the. rolls 8, and the other section when swung to closed position isso correlated vvith the irst mentioned--section=.to'toi'in a ringer tire, Jthemold, of course," tir-st being` inserted therebetween. ln this connection, it isito be Lnoted thatwthe upper or'hiiiged support 10 is provided with lradial disposed ffari'nsA 13 carrying rol-1ers 14 adapted to-engagethe internaltperipheraltsurfacesl of the "tire,

whereby. `the. uppermost-section Vof' 'the `tire Will carry With .said` hinged support when lit is swung, thus separatingthesections to permit the l mold to loe/removed and holding `the section of the-tire `for subsequent 'cooperative lassociation with the `remaining section. The inside diameter or mold engaging surface'oflthe tire sections isr ot such dimension that `the Vmold will bev firmlyheld by the tire when in closedA position,-thus in effect, altho not physically, the -mold and tires become one `elementi Infllig; 5,* l have shown the tire in engagement with the abuttii'ig `flangesotadjacent pipe sections, although'it is to be understood "that annular flanges, las indicated., at 16` in Fig. 6, may be provided at predetermined spaced intervals along the lengthu of 'the mold ft'o rl engagement by? the@ tires.

ifa

From the foregoing it will be apparent that the mold itself is not subjectpto any wear lfrom the'driving and supporting mechanism and that by virtue of the peculiar construction and the simple methodsvof associating the `tire with the mold, replacement of worn parts may Ybe inexpensively*accomplishet. Y

Rotary motion is imparted to the mold B by means of the gears 17 splined to the drive shaft D which is connected in any suitable manner to the source of power, such gears having engagement with the spaced gear portions 18 of the tire.

While I have described each half tire section as being composed of a single member, in actual practice, for convenience in cutting the Vgear teeth on the tire sections, I form the portions carrying the gear tee-th as separate parts as shown in Fig. 5, which are bolted to the tire. I also prefer to mal-:e that portion 19 of the tire which runs on the roller separate so that is can be renewed. Athen this portion of each half section is made scparate, as shown in Fig. 5, itinay be bolted in place by the same bolts which secure the gear carrying portions in place.

InV order that the machine may be accommodated to molds of varying length, I have provided means whereby-the units G, Vwhich are in effect cradles, may be moved longitudinally of the machine, such means comprising in general longitudinal racks 2O stationary on the base A of the machine and a suitable train of gears 2l carried by the lower support 7 of the units C, upon rotation of which the units are caused to move longitudinally of the machine. The gears ,17 are moved with the unit C.

It will be seen that in each cradle unit C' the upper or hinged support l0 is provided with a counterweight 22 which upon release and retraction of the swinging locking member 23 causes the hinged support 10 to automatically open to the dotted line position of Fig. 2, said counterweight preferably being massive enough to so function without manual aid, thus exposing vthe mol'd. As has been previously stated,` the support l0 carries withv it the uppermost section of the tire andthe remaining section of the tire cradles y or supports the mold. The mold may now f Zontal position whereupon release as above readilybe removed from the machine and a new one inserted -after which the hinged support 10 is closed and the locking member 23 swung to its locking position, thus clamping the mold between the section of the tire. The machine is then ready for operation and when the pole has been properly formed within the mold the machine is stopped when the Split in the tire is in a horiis made. A

I claim: l. A pole making machine comprising in combination, a mold, a sectional tire therefor, lower support-ing means, and upper supporting means, one of said means being movable and adapted te carry a section of the tire therewith to expose parts lying therewithin, and the supporting` means being arranged to co-operate to hold the sections or the vtire in tire form when the parts are in operative position.

l2. A pole making machine comprising in combination, a mold, a sectional tire therefor, lower supporting means, and upper supporting means, said upper supporting means being swingable and adapted tocarry the section of the tire which is uppermost therewith as it is swung.

3. A pole making machine comprising in combination, a mold, a sectional tire therefor, lower supporting means, and upper supporting means, one of said means being Ceunterweighted and movable to expose parts lying thcrewithin, and the supporting means being arranged to co-operate to hold the sections of the tire in tire form when the parts are in operative position, together with releasablc means for locking the parts in such position.

4t. A pole making machine comprising in combination, a mold, two semi-circular cradle-like mold embracing and supporting members, supporting and guiding rollers for said members and means for swinging a mold supporting member to a position to permit removal of the mold.

5QA pole making machine comprising in combination, a mold, a sectional tire therefor, spaced supporting rolls, spaced guiding rolls, and a support for said rolls, the portion carrying the guiding rolls being pivotable and adapted toy hold the tire in tire form inone position and to carry a section of the tire therewith in another position to expose the mold. Y

6. A pole making machine ycomprising in combination, a mold, a sectional tire therefor, spaced supporting rolls, spaced guiding rolls, and a support for -said rolls, the portion carrying thev guiding rolls being pivotable and adapted to hold the tire in tire form in one position and to carry a, section of the tire therewith in another position to expose the mold together with driving means associated with the aforesaid tire for rotating the mold thru the medium of said tire.

7. A pele making machine comprising in combination, a base; Va mold; and a plurality of combined supporting and driving units for the mold including a frame structure having a swinging portion, and a split member revoluble in said frame structure, one portion of said member being adapted to be carried with the aforesaid swinging portion when it is swung and the remaining portion being adapted to be cradled in the remaining portion of said frame structure.

S. A pole making machine comprising in combination, a base, a mold, and a supporting and driving unit for the mold mounted on said base including a frame structure having a pivoted portion, guiding rollers in said pivoted portion, supporting rollers in the remaining portion, a split ring-like member intermediate the mold and said frame structure engageable by said rollers and means whereby a portion of the ringlike member is carried with the pivoted portion of the frame as it pivots, and driving means associated with said ring-like member.

9. A pole making machine comprising in combination, a mold and a supporting, guiding and driving unit for the mold including a pair of semi-circular members adapted to be releasably clamped to said mold, a part of said unit adapted to be swung away ircm the apparatus to expose the mold and adapted to carry a semi-circular member therewith.

l0. A centrifugal pole making machine comprising in combination, a base, a mold, a plurality of cradles for revolubly supporting the mold on the base, one or more of which cradles are adjustable longitudinallyl or" the base.

11. In a centrifugal pole making machine the combination of mold parts and a hinged support swingable to one side of the apparatus and adapted to carry a mold part when thus swung, together with means for moving said supports longitudinally of the mold. Y

l2. ln a centrifugal pole making machine, a mold, and a combined tire and driving member therefor comprising a base portion adapted to engage the mold, gear teeth carrying portions on opposite sides of the base portion and a tire portion, said portions being secured together.

13. A pole making maching comprising in combination, a mold, a split mold supporting collar, supporting and retaining rollers the latter of which are removable to free the mold, and means for carrying a portion of the splitcollar with said retaining collars. i

ln testimony whereof, I have hereunto signed my name.

DAVID B. HANNA. 

